Have you walked outside and been shocked with the haze and smell in the air?
The National Weather Service says a gravity wave with winds of 40 to 50 mph brought smoky air from south of the border into the Rio Grande Valley.
Forecasters say the polluted air is a combination of industrial and agricultural burning in Mexico, the Yucatan and Central America.
The NWS says air quality reached a very rare 155 at 2 p.m. this afternoon in the Brownsville, San Benito and Harlingen areas.
The haze should stay around through the night and then clear out by noon Friday when the winds changes direction.